2 * FreeRTOS memory safety proofs with CBMC.
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32 * We allocate a TCB and set some members to basic values
34 TaskHandle_t xUnconstrainedTCB( UBaseType_t uxPriority )
36 TCB_t * pxTCB = pvPortMalloc( sizeof( TCB_t ) );
43 /* uxPriority is set to a specific priority */
44 pxTCB->uxPriority = uxPriority;
46 vListInitialiseItem( &( pxTCB->xStateListItem ) );
47 vListInitialiseItem( &( pxTCB->xEventListItem ) );
49 listSET_LIST_ITEM_OWNER( &( pxTCB->xStateListItem ), pxTCB );
50 listSET_LIST_ITEM_OWNER( &( pxTCB->xEventListItem ), pxTCB );
54 listSET_LIST_ITEM_VALUE( &( pxTCB->xStateListItem ), pxTCB->uxPriority );
58 listSET_LIST_ITEM_VALUE( &( pxTCB->xStateListItem ), portMAX_DELAY );
63 listSET_LIST_ITEM_VALUE( &( pxTCB->xEventListItem ), ( TickType_t ) configMAX_PRIORITIES - ( TickType_t ) pxTCB->uxPriority );
67 listSET_LIST_ITEM_VALUE( &( pxTCB->xEventListItem ), portMAX_DELAY );
74 * We set the values of relevant global
75 * variables to nondeterministic values
77 void vSetGlobalVariables( void )
79 uxSchedulerSuspended = nondet_ubasetype();
83 * We initialize and fill with one item each ready tasks list
84 * so that the assertion on line 175 (tasks.c) does not fail
86 BaseType_t xPrepareTaskLists( void )
90 __CPROVER_assert_zero_allocation();
92 prvInitialiseTaskLists();
94 for( int i = 0; i < configMAX_PRIORITIES; ++i )
96 pxTCB = xUnconstrainedTCB( i );
103 vListInsert( &pxReadyTasksLists[ pxTCB->uxPriority ], &( pxTCB->xStateListItem ) );
106 listGET_OWNER_OF_NEXT_ENTRY( pxCurrentTCB, &pxReadyTasksLists[ configMAX_PRIORITIES - 1 ] );